Blade threading device



FIG. 1 is a perspective top front view of a blade threading device, showing my new design;

FIG. 2 is a perspective top rear view thereof;

FIG. 3 is a front side elevation view thereof;

FIG. 4 is a rear side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom view plan thereof.

The broken lines indicate boundary areas of a cable and are not part of the claimed design. 

CLAIM The ornamental design for a blade threading device, as shown and described. 